Metabolic Component Function of the kidneys base bicarbonate Na HCO3 Process of kidneys excreting Ht into the urine and reabsorbing HCO, into the blood from the renal tubules D active exchange Nat for H between the tubular cells and glomerular filtrate 2) carbonic anhydrase is an enzyme that accelerates hydration/dehydration CO2 in renal epithelial cellsMetabolic Component ➢ Function of the kidneys ➢ base bicarbonate Na HCO3 ➢ Process of kidneys excreting H+ into the urine and reabsorbing HCO3 - into the blood from the renal tubules 1) active exchange Na+ for H+ between the tubular cells and glomerular filtrate 2) carbonic anhydrase is an enzyme that accelerates hydration/dehydration CO2 in renal epithelial cells